Australian Graffiti
Found this great flickr account with some amazing graffiti. It is located in the industrial area on the Geelong line between Laverton and Werribee in western Melbourne, Australia.
Hidden from the view of passing traffic, these installations are visible only to the passengers on the train line. Situated across from the Laverton RAAF base at Aircraft train station, these illegal pieces of art brighten up an otherwise barren industrial landscape.